| Title | Up-Estuary Extent and Lithologic Characteristics of Tsunami Deposits Attributed to the 1700 Cascadia Earthquake within Alsea Bay, OR |
| Publication Type | Thesis |
| Year of Publication | 2018 |
| Authors | Spruell, John T. |
| Academic Department | College of Earth, Ocean, and Atmospheric Sciences |
| Degree | B.S. |
| Pagination | 18 p. |
| University | Oregon State University |
| City | Corvallis, Or. |
| Type of Work | Bachelors Thesis |
| Call Number | OSU Libraries: Digital Open Access |
| Keywords | Alsea Bay, coastal hazards, earthquakes, paleosciences, Salmon River Estuary, sediments, tsunamis |
| Notes | Major earthquakes generate tsunamis. Tsunamis leave behind deposits of marine sand. Previously, there was a lack of information about how far inland these deposits could be found on the central Oregon coast. To fill in this gap, the author drilled 81 cores around Alsea Bay. He found identifiable tsunami deposits in 56 cores, extending up to 7 kilometers inland. The author profiles the sand sheet’s thickness at different locations and compares his finding at Alsea Bay with what is known at the Salmon River estuary. “The location, thickness, and other lithological properties can be used [to] validate inundation maps as well as possible rupture scenarios and magnitudes if flow capable of suspending sediments is directly related to uplift of the seafloor in earthquakes.” (p.15) Well illustrated. B.S. thesis. Major professor was Andrew J. Meigs. |
| URL | https://ir.library.oregonstate.edu/concern/undergraduate_thesis_or_projects/mk61rn90f |
